well..don't you need to ask the user to input numbers so the program can calculate the result? Right now it looks as though your just trying to add words..

No. This is a fin fout. I have all the program and test score information saved on a notepad file where this program will be reading it from and will output the result on both screen and another output notepad file.
The program works just fine except for the grade letter.

so i'm sure == is used instead of = because we don't want to assign the grade to letters but simply state that it is equal to the letters.
Only problem is the letter are showing in weird characters.. and I can't for the sake of my life figure it out!! :P